Polyester heavy-duty anticorrosive coating with polyaniline-modified glass flakes, and preparation method thereof
A technology of glass flakes and polyaniline, applied in anti-corrosion coatings, polyester coatings, coatings, etc., can solve problems such as corrosion, and achieve the effects of not easy to sink, strong corrosion resistance and permeability resistance, and good storage stability
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Embodiment 1-3
[0048] Prepare polyaniline-modified glass flakes as follows:
[0049] (a) Prepare a mixed aqueous solution of phosphoric acid and phytic acid: wherein the phosphoric acid is 1.3 mol / liter; the phytic acid is 0.6 mol / liter.
[0050] (b) Add aniline to the mixed aqueous solution of phosphoric acid and phytic acid, the concentration of aniline after mixing is: 0.5 mol / liter. Stirring was continued for 1.5 hours. Take 500ml of mixed aqueous solution of phosphoric acid, phytic acid and aniline, add 70g of 240-mesh glass flakes, stir for 25 minutes, and pre-cool to 8°C.
[0051] (c) Prepare an aqueous solution of an oxidizing agent: select benzoyl peroxide as an oxidizing agent, and prepare a concentration of benzoyl peroxide of 1.5 mol / liter. Precool the aqueous solution of benzoyl peroxide to 8°C.
[0052] (d) Slowly add 500ml of solution (c) into 500ml of phosphoric acid, phytic acid and aniline mixed aqueous solution (b) containing glass flakes within 10-30 minutes, react at ...
Embodiment 4-6
[0056] Prepare polyaniline-modified glass flakes as follows:
[0057] (a) Prepare a mixed aqueous solution of phosphoric acid and phytic acid: wherein phosphoric acid is 0.4 mol / liter; phytic acid is 0.15 mol / liter.
[0058] (b) Add aniline to the mixed aqueous solution of phosphoric acid and phytic acid, and the concentration of aniline after mixing is: 0.2 mol / liter. Stirring was continued for 1.2 hours. Take 500ml of mixed aqueous solution of phosphoric acid, phytic acid and aniline, add 20g of 325-mesh glass flakes, stir for 15 minutes, and pre-cool to 2°C.
[0059] (c) Prepare an aqueous solution of an oxidizing agent: ammonium persulfate is selected as the oxidizing agent, and the concentration of ammonium persulfate prepared is 0.5 mol / liter. The aqueous solution of ammonium persulfate was precooled to 2°C.
[0060] (d) Slowly add 500ml of solution (c) into 500ml of phosphoric acid, phytic acid and aniline mixed aqueous solution (b) containing glass flakes within 15 ...
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